added shortened URL for provision script

README.md

@@ -2,4 +2,9 @@
 
 ```
 pkg_add wget && wget 'https://git.lain.church/gashapwn/lyadmin/raw/branch/master/perl-script/provision.pl' -O - | perl
-```
+```
+
+or
+```
+pkg_add wget && wget 'https://s.lain.la/wrMJw' -O - | perl
+```